Valve



Dec. 4 1945. H o` JOHNSON ETAL VALVE 2 Sheets-Sheet 1 Patented Dec. 4, 1945 UNITED STATES PATENT OFFI ]['a assignors to The AInericn (ol11pany of New Jersey, a corporation of New Jersey Appicaton August 9, 1943, Serial 1To. 497,996

(cl. 277l) 4 Claims This invention relates t valves and, particu la1'ly, t0 an iInproved valve for use in connection with the exhaust gas Systen1 0f blast furnaces and the like n the 0peration of a blast furnace in the steel industry, it is the genera1 practice to convey the waste or exhaust gases fr0In the blast furnace t0 a dust catcher, and thence both through a Washing apparatus t0 the Stoves used in connection With the operation 0f the furnace and to the boiler house for futher use t is custonlary to carry the gases from the dust catcher t0 the b0i1- er house in a Telatively large conduit 0I' pipe and a relatively Smaller conduit or pipe leading to the stoves is connected t0 this larger pipe OI' conduit at a p0int intermediate the length there0f t is necessary, in order t0 provide sucient fw of the gases to the Stoves, t0 incorporate a valve in the large conduit at a p0int imnlediately beyond the connection thez'ewith of the line leadi11g t0 the Stoves S0 as t0 provide SuCient back preS` Sure in the large c0'1duit in order t0 force the required volume of gases through the gas Washer and into the stoves, and, a't the saIne tine, per- Init sufCient gases to continue to OW through the large conduit to Supply the boilel' house.

IIeret0fore, a conventional 'type Of buttery valve vvas generally used f0' Such purp0se Which consisted usually of a disk rotatable on a dia nletric axis sin1ilar t0 a daInper, Which was opened and C10Sed the required an0unt to restrict the 1 1()W of gases thfough the large conduit. A valve constructed in such a Inanner is un$atisfactory for the Teason that the gases not only eroded the T0ttable disk but the gases were deflect ed thereby against the inner side walls of the conduit and due to the faict that the gases are still laden, a't this point in their trave1, With a sman amount of ue dust from the blast fur11ace, the gases in impinging against the disk and inner wans of the conduit eroded the Sanle and eventually Wore theIn away. AS a result, it wi11 be seen that the disk and the inner side waus of the large conduit or pipe vvou1d have to be replaced 0I' 1^epired rather frequent1y vvhich Was inconvenient as Well as expensive.

According1y, it is the general object of the present iI1vention to provide al1iInproved valve Wherein all of the above Inenti01ed disadvantages are eliIninated' t is another object of this illvention to provide an i1T1proved valve vvhich iS constructed and arranged so that the gases or ]uid flowing therethrough are deflected toward the center of the valve and the opening therethrough thereby elilx1- vide an improved valve Which iS sin1ple and inex pensive in its cOnSruCti0n and use, and one con- Sisting of a miIlilnuIn nlunber of parbs which hav ing a' relatively long life thereby e1ilninating Inaintenance and rep1acenent costs.

various other objects and advantages of this invention Will be nlore apparent in the course of the f0110wing speciiication and Will be particular ly pointed out in the appended claims In the acc0mpanying drawings there is shown, for the purpose of illustration, an en1bodilnent Which our invention Inay assuIne in practice.

In these drawings:

'igure 1 is a plan view showing schenlatically the arrangen1ent of the dust catcher, the gas Washer and Stoves Of a blast furnace a1d the ex haust gas line vvith which the i111proved valve 0f our invention is il1corporated;

Figure 2 is an end vievv, partly in Section 0f the inproved valve 0f ou1'invention;

Eigure 3 is a sectiona1 view taken on line of 'igure 2; and

E'igure is a' side view of our iInproved valve showing how the salne is actuated,

Referring more particularly to the drawings, the iInproved valve of our invention, as shown in 'igures 2 3, and 4, C0Inprises an annular body Inenlber 2 vvhich consists of a Stee1 01' iron casti!1g having an a'xial opening 3 arranged therethrough With the opening 3 having a diameter Substantia1]y equal to the inner dialneter 0f the pipe or conduit with Which the valve is adapted to be used. There is journaled in suitable bearing portions 4 Carried by the annular nlenber z and extending across the openjng 3 thereil a pai' of spaced apart paraue1 Shafts 5 S0 as to divide the 0pening 3 into three sections '1e1eis carried by each of the shafts 5 a plate nlen1ber e which is Securely attached to he shafts prefefably by Tneans of the portions integrally afranged on the plateS at each end there0f so ads to pr0vide a S0Called iiap valve which is silTlilar to al buttery type valve. 'he portion of each of the plates 6 disposed on the outer sides of the and through the valve will be deected towafd the center there0f by Said arcuated inner end portions, said latter portions jointly dening a converging passageway between the plate Irlen1- bers When the va1ve is in c10sed p0Sii0n as vve11 as when it is partilly open.

4- A valve of the class described, COInprising an annular body member, a pair of Spaced-apart paralle1 Shafts journaled therein and extending acr0ss the opening therethr0ugh, and a respec tive Substantia1ly Sernicircu1ar plate securely at tached at its central region t0 each shaft, the portions of said plates disposed on the outer portions of the plates jointly dening a converging passageway When the valve is in c10sed p0Sition as well as when it is partially open HARRY 0' JOHNSON MAB,fIN O,HARE 

